Judging from the problem the original poster had, yes. But there should be a workaround... Why don't you download the Japanese version of Windows from Microsoft Tech Bench and clean-install it? Your genuine English (or any language serial) should be usable without any issue. Just make sure you download the same edition (Windows 10 for full Multilanguage unrestricted Home or Pro, Single Language for a SL serial etc).

Thanks. What is Tech Bench?

On my Retina MacBook Pro 15", I have Windows 7 Professional 64-bit Japanese version installed via Bootcamp. When I tried to upgrade to Windows 10 for free by clicking the bottom right hand corner, it stated that some of the hardware are not compatible with Windows 10. As far as I recall, it was about the GPU.

I have not bought the Surface Pro 4 yet.

Some Japanese Windows users said that it depends on how the programmers wrote the programs. Some programs would work under English version of Windows 10 + Japanese language pack. Others won't.

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Microsoft Tech Bench is an official site to download Windows 10 ISO (click link to open). While attempting an upgrade from the Get Windows 10 (GTX) utility, it will check your devices. If it cannot find a Windows 10 driver for a device, it will display this message that you cannot install Windows 10 in that computer, it is not about being a Mac. But if you download the same language ISO (in your case Japanese) and start the upgrade from there, it will proceed without any issue. In your case you may have "Microsoft Basic Display Adapter", until you install the Windows 7 graphics driver. That's not a big deal. So download the ISO, open it with a suitable application, extract the files to a folder and run setup from there. To make sure the process won't stuck, disable any antivirus, firewall etc and then right-click setup and run as Administrator.

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Microsoft Tech Bench is an official site to download Windows 10 ISO (click link to open). While attempting an upgrade from the Get Windows 10 (GTX) utility, it will check your devices. If it cannot find a Windows 10 driver for a device, it will display this message that you cannot install Windows 10 in that computer, it is not about being a Mac. But if you download the same language ISO (in your case Japanese) and start the upgrade from there, it will proceed without any issue. In your case you may have "Microsoft Basic Display Adapter", until you install the Windows 7 graphics driver. That's not a big deal. So download the ISO, open it with a suitable application, extract the files to a folder and run setup from there. To make sure the process won't stuck, disable any antivirus, firewall etc and then right-click setup and run as Administrator.

As far as I recall, existing Windows drivers including the one for the Nvidia GPU for my Mac are provided by Apple through Bootcamp drivers. There are two graphics card on my Mac. One is from Nvidia which I could download from their website and the other is from Intel.

What suitable application do you recommend to open the ISO? Although I use Windows applications, I don't know Windows well.

Last edited by petercohen8877; 23 Jan 2016 at 20:26.

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To open an ISO you can use MagicISO, or any other suitable application. Once you see the files, extract them to a folder. Not sure, but maybe you can do that with WinRAR as well. Then you can download the graphics drivers directly from NVidia or Intel. Another option is to backup your drivers before upgrading to Windows 10, then install them from the backup.

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I have a MacBook Pro also (just with Intel graphics though). Bootcamp 6 provides this driver and it is then updated automatically to the latest Intel version by Windows update so you should have no problems with that one.

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